A parallel plate capacitor made to circular plates each of radius R = 6 cm has capacitance C = 100pF. The capacitance is connected to a 230V A.C. supply with an angular frequency of 300 rad/s. The r.m.s. value of conduction current will be:

5.7 µa 6.3 µA 9.6 µA 6.9 µA

6.9 µA

$I_{R M S} =\frac{E_{R M S}}{X_C}=\omega C E_{R M S}$ $=300 \times 10^{-10} \times 230$ = 6.9 µA